Bimatoprost-Timolol

What Is Bimatoprost-Timolol?

Bimatoprost-timolol is a prescription eye drop that combines two medicines in one bottle:

• Bimatoprost, a prostaglandin analog (prostamide)
• Timolol maleate, a beta-adrenergic blocker (beta-blocker)

It is used only in the eye. It is not taken by mouth or injected.

Approved use

• Lowering eye pressure (intraocular pressure) in adults with open-angle glaucoma or ocular hypertension who need more than one medicine to reach their target pressure.

Available formulations and strengths

• Ophthalmic solution: bimatoprost 0.03% / timolol 0.5%, a fixed-dose combination
• Preservative-free single-use versions are available in some countries
• Available as brand-name and generic products. Availability and labeling vary by country.

This is different from other combination eye drops, such as brimonidine-timolol or dorzolamide-timolol, which contain a different second ingredient. Each strength has its own detailed page.

What Is the Recommended Dosage of Bimatoprost-Timolol?

Dosing depends on several factors:

• Condition: The product is used for glaucoma or high eye pressure, as directed by an eye specialist.
• Age: It is used in adults. Safety and effectiveness in children have not been established. Use in children should only be directed by a pediatric eye specialist.
• Body weight: Weight is generally not used to set the dose of eye drops.
• Organ function: People with kidney or liver problems may need closer monitoring, because timolol can be absorbed into the body and processed by these organs.
• Other medicines: Some medicines can raise the amount of timolol absorbed in the body.

Dosage form: Eye drop solution in a multi-dose bottle or preservative-free single-use container.

The prescriber decides how many drops to use, in which eye or eyes, and when. It is usually used once a day, often in the morning, but follow the exact directions on your prescription and label. Using more than directed may lower the effect and increase side effects. Do not change your schedule without speaking with your specialist.

How Bimatoprost-Timolol Works

Each ingredient lowers eye pressure in a different way:

• Bimatoprost helps fluid drain out of the eye more easily, through both the main drainage pathway and a secondary pathway.
• Timolol reduces the amount of fluid the eye produces.

Using two medicines with different actions can lower eye pressure more than one alone for some people. Lower eye pressure helps protect the optic nerve from damage.

Bimatoprost-timolol manages glaucoma but does not cure it. Glaucoma is a long-term condition. Eye pressure may rise again if treatment is stopped, and lost vision cannot be restored.

Is a Prescription Required to Buy Bimatoprost-Timolol Online?

Yes. Bimatoprost-timolol is prescription-only. A licensed ophthalmologist (or another licensed eye care professional) must evaluate you and diagnose your condition first.

Safety when buying online

• Buy only from licensed, verified pharmacies that require a valid prescription.
• Avoid websites that sell prescription eye medicines without a prescription.
• Counterfeit, expired, or improperly stored eye drops can cause eye infection or vision harm. Do not use veterinary products.
• Check the packaging, label, and seal when it arrives. Ask a pharmacist if anything looks unusual.

Side Effects of Bimatoprost-Timolol

Common Side Effects

• Eye redness
• Eye itching, burning, stinging, or discomfort
• Feeling that something is in the eye
• Dry eye
• Blurred vision
• Eyelash changes: longer, thicker, or darker lashes
• Darkening of the eyelid skin around the eye
• Headache

Serious Side Effects

These are uncommon but need prompt attention.

• Permanent change in eye color: the colored part of the eye (iris) may become browner over time, especially in people with mixed-color eyes. This change is usually gradual and may be permanent.
• Swelling in the back of the eye (macular edema): blurry or distorted central vision
• Inflammation inside the eye: eye pain, worsening redness, light sensitivity, or reduced vision
• Eye infection: pus, increasing pain, or swelling of the eye or eyelid, especially if the bottle tip has become contaminated
• Changes around the eye: deepening of the eyelid crease or a sunken look of the eye (loss of fat around the eye)
• Breathing problems, such as wheezing, shortness of breath, or worsening asthma or COPD symptoms (timolol can be absorbed into the body)
• Very slow or irregular heartbeat, fainting, severe dizziness, or very low blood pressure
• Signs of heart failure: swelling of the ankles, sudden weight gain, or new shortness of breath
• Signs of a severe allergic reaction: swelling of the face, lips, tongue, or throat; hives; trouble breathing
• Muscle weakness that is new or worsening

Seek emergency medical care for trouble breathing, swelling of the face or throat, fainting, chest pain, or sudden loss of vision. Contact your specialist promptly if side effects are bothersome, vision changes, or eye pain develops.

Drug Interactions

Bimatoprost-timolol may interact with:

• Other prostaglandin eye drops (such as latanoprost or travoprost): using two together may reduce the pressure-lowering effect or even raise eye pressure
• Other beta-blockers, including oral beta-blockers and other beta-blocker eye drops, which may add to heart rate and blood pressure effects
• Blood pressure medicines, especially calcium channel blockers, which can cause very low blood pressure or a slow heart rate
• Heart rhythm medicines, such as digoxin, amiodarone, and quinidine
• CYP2D6-inhibiting medicines, such as certain antidepressants (for example, fluoxetine and paroxetine) and quinidine, which can increase the amount of timolol in the body
• Catecholamine-depleting medicines, such as reserpine
• Clonidine: stopping clonidine while using a beta-blocker may cause a sharp rise in blood pressure
• Diabetes medicines, including insulin: timolol may hide some warning signs of low blood sugar
• Epinephrine: beta-blockers may make allergic reactions harder to treat
• Eye drops containing NSAIDs: combined use should be guided by your specialist because of the possible risk of macular swelling
• Other eye drops: wait at least 5 minutes between different eye medicines

OTC medicines, supplements, and herbal products, including cold and allergy remedies and decongestants, may also interact. Give your licensed specialist and pharmacist a full list of everything you take, including eye drops, creams, vitamins, and supplements.

Safety & Important Considerations

• Asthma and lung disease: Timolol can cause serious breathing problems in people with asthma or COPD, even as an eye drop.
• Heart conditions: Use caution with heart failure, slow heart rate, heart block, low blood pressure, or circulation problems such as Raynaud’s phenomenon.
• Eye color and eyelid changes: These can be permanent, even after you stop the medicine. Tell your specialist if you are concerned, especially if only one eye is being treated, as the eyes may look different from each other.
• Unwanted hair growth: Hair may grow where the solution touches the skin. Wipe away extra solution from the skin with a clean tissue.
• Eye conditions: Tell your specialist if you have eye inflammation, a history of macular swelling, have had cataract surgery, or have narrow-angle or angle-closure glaucoma.
• Diabetes: Timolol may hide symptoms of low blood sugar, such as a fast heartbeat.
• Thyroid disease: Timolol may hide signs of an overactive thyroid.
• Muscle weakness conditions: Tell your specialist if you have myasthenia gravis or similar conditions.
• Liver or kidney disease: Tell your specialist, as monitoring may be needed.
• Pregnancy and breastfeeding: Human data are limited. Timolol can pass into breast milk. Discuss risks and benefits with your specialist before use, especially if you are pregnant or planning pregnancy.
• Children: Use only under the direction of a pediatric eye specialist.
• Older adults: May be more sensitive to dizziness, low blood pressure, and slow heart rate.
• Contact lenses: The preservative (benzalkonium chloride) in many eye drops can be absorbed by soft contact lenses. Remove lenses before use and wait at least 15 minutes before reinserting them, unless your label says otherwise.
• Driving and machinery: The medicine may briefly blur your vision or cause dizziness. Avoid these activities until you know how it affects you.
• Surgery: Tell your surgeon or anesthesiologist that you use a beta-blocker eye drop.
• Monitoring: Glaucoma treatment requires regular eye pressure checks and eye exams. Your specialist may also check your heart rate and blood pressure.
• Hygiene: Do not touch the dropper tip to your eye or any surface. Contaminated eye drops can cause serious eye infections.

Who This Medication Is For

• Adults diagnosed with open-angle glaucoma or ocular hypertension by an eye specialist
• People whose eye pressure is not controlled enough with a single medicine, as determined by their specialist

Who Should Not Take Bimatoprost-Timolol

• Anyone allergic to bimatoprost, timolol, other prostaglandin analogs, or any ingredient in the product
• People with asthma, a history of asthma, or severe COPD
• People with a very slow heart rate, certain types of heart block, overt heart failure, or cardiogenic shock

Use with caution, and only under specialist guidance, in people with active eye inflammation or a history of macular swelling. Tell your specialist about all medical conditions before starting treatment.

What to Do If You Miss a Dose

• Use the missed dose as soon as you remember.
• If it is almost time for the next dose, skip the missed one and return to your usual schedule.
• Do not double the dose to make up for a missed one. Using more than once a day may reduce the effect.
• If you are unsure what to do, contact your licensed specialist or pharmacist.

Related medications to Bimatoprost-Timolol

Only a licensed specialist can decide whether a different treatment suits you.

• Prostaglandin analogs alone (for example, bimatoprost, latanoprost, travoprost, tafluprost)
• Beta-blockers alone (for example, timolol)
• Alpha-2 agonists (for example, brimonidine)
• Carbonic anhydrase inhibitors (for example, dorzolamide, brinzolamide)
• Other combination eye drops, such as latanoprost-timolol, travoprost-timolol, dorzolamide-timolol, or brimonidine-timolol
• Rho kinase inhibitors
• Laser therapy or surgery in some cases

Do not stop or switch treatments on your own. Changes should be made only after consultation with your specialist.

Storage Instructions

• Store at room temperature, typically 59°F to 77°F (15°C to 25°C), unless your label says otherwise.
• Keep the bottle tightly closed and protect it from moisture, heat, and direct light.
• Do not freeze.
• Keep out of reach and sight of children. Accidental swallowing of eye drops can be dangerous for young children. Seek emergency help if this happens.
• Do not use past the expiration date. Many eye drop bottles should be discarded within a set time after opening (often about 4 weeks). Preservative-free single-use containers should be discarded after use. Follow your label and pharmacist’s guidance.

Disclaimer:

This page is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Patients must consult a licensed ophthalmologist or another relevant medical specialist before starting, changing, or stopping treatment. Treatment decisions must be based on a full clinical evaluation by a qualified specialist.